How do you write a SQL loop statement?

In SQL, there are no looping statements like in other programming languages (such as for loops or while loops). SQL is a declarative language primarily used for querying and manipulating data in databases, rather than writing loop logic.

However, you can use recursive queries or other techniques to simulate loop logic. Here are some common scenarios and examples:

1. Implementing a recursive query for a loop:
   A recursive query is a technique that allows for repeating execution within a query. It can be used to implement tree structures, hierarchical structures, and looping processes. Here is an example of using a recursive query to achieve incremental numbers:
2. Generate a list of numbers from 1 to 10 recursively.
3. This query will return a sequence of numbers from 1 to 10.
4. Using conditional statements (such as CASE WHEN) for looping:
   If you need to execute different logic based on different conditions, you can use conditional statements to simulate looping logic. Here’s an example, updating data in a table based on different conditions.
5. Update the ‘column_name’ in ‘your_table’ based on different conditions, setting ‘value1’ if condition1 is met, ‘value2’ if condition2 is met, and ‘default_value’ otherwise.
6. The data in the table will be updated line by line based on the conditions.

Please note that the examples above are just a simple demonstration of how to simulate looping logic and may not cover all use cases. In reality, SQL is better suited for handling sets and relational data rather than complex looping logic. If complex looping operations are needed, it may be necessary to use other programming languages for processing.